发明名称 |
MEJSELFESTE AV STAL OCH FORFARANDE FOR FRAMSTELLNING AV MEJSELFESTE |
摘要 |
A bit holder consisting of steel, said bit holder comprising a bore for accommodating the bit shaft and being welded to the cutting head of a cutting machine, characterized in that the bit holder consists of a part of heat-resistant steel of high strength and of a foot consisting of an unalloyed or low alloy steel of good weldability and being welded to said foot over the whole contacting area. In making the holder a blank corresponding to the part accommodating the bit shaft is over the whole contacting area welded to a blank corresponding to the foot to provide a composite blank which is subsequently forged in a forging die. |
申请公布号 |
SE429151(B) |
申请公布日期 |
1983.08.15 |
申请号 |
SE19760010453 |
申请日期 |
1976.09.21 |
申请人 |
VEREINIGTE OSTERREICHISCHE EISEN- UND STAHLWERKE - ALPI.. |
发明人 |
H * WRULICH;O * SCHETINA |
分类号 |
E21B10/46;E21C35/18;(IPC1-7):21C25/42;21C35/18 |
主分类号 |
E21B10/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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